What is the domain of the function y=3 sq root 6x+42 ?

x ¡Ý 0
x ¡Ü 7
x ¡Ý ¨C6
x ¡Ý ¨C7

I think it is D...?

1 answer

  1. we need 6x+42 >= 0 for √ to be defined.
    So, x >= -7

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